Neripteron cornucopia

{{Speciesbox | image = Neripteron cornucopia (MNHN-IM-2000-32723).jpeg | image_caption = ''Neripteron cornucopia'' shells (syntype at MNHN, Paris) | taxon = Neripteron cornucopia | authority = (Benson, 1836)<ref name="Benson 1836">Benson W. H. (1836). "Descriptive catalogue of a collection of land and freshwater shells, chiefly contained in the museum of Asiatic society, part 2 (Fluviatile shells)". ''The Journal of the Asiatic Society of Bengal'' '''5'''(49-60): [https://archive.org/stream/journalofasiatic05asia#page/n867/mode/2up 741]-750, [https://archive.org/stream/journalofasiatic05asia#page/748/mode/2up pages 478-749].</ref> | synonyms_ref = <ref>Bouchet, P. (2016). ''Neripteron cornucopia'' (Benson, 1836). In: MolluscaBase (2017). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=874186 on 2017-11-05</ref> | synonyms = ''Neripteron'' (''Dostia'') ''cornucopia'' (Benson, 1836) ''Nerita indica'' Souleyet, 1842<ref>Souleyet L. F. A. (1842). "Description de cinq nouvelles espèces de nérites fluviales provenant du voyage de la Bonite". ''Revue Zoologique par la Société Cuviérienne'' (1842): 269-270, [https://archive.org/stream/revuezoologiquep05soci#page/268/mode/2up page 269].</ref> ''Neritina'' (''Dostia'') ''cornucopia'' Benson, 1836 ''Neritina aciculata'' Reeve, 1855 ''Neritina cornucopia'' Benson, 1836 ''Neritina melanostoma'' Troschel, 1837 }}

'''''Neripteron cornucopia''''' is a species of freshwater snail, an aquatic gastropod mollusk in the family Neritidae, the nerites.<ref name="WoRMS">MolluscaBase eds. (2021). MolluscaBase. Neripteron cornucopia (Benson, 1836). Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=874186 on 2021-09-22</ref>

==Distribution== Distribution of ''Neripteron cornucopia'' include Odisha state and West Bengal in India, Myanmar, Vietnam,<ref>Hylleberg, J. (2000). "MOLLUSCS COLLECTEDBYTHE TMMP IN VIETNAM AND CAMBODIA". ''Phuket Marine Biological Center Special Publication'' '''21'''(1): 519-537.</ref> Mai Po Marshes Nature reserve in Hong Kong,<ref name="Huang 1997">Huang, Q. (1997). "Morphological, allozymic, and karyotypic distinctions between ''Neritina'' (''Dostia'') ''violacea'' and ''N.'' (''D.'') ''cornucopia'' (Gastropoda: Neritoidea)". ''Journal of Zoology'' (London) '''241'''(2): 343-369. {{doi|10.1111/j.1469-7998.1997.tb01964.x}}</ref> Singapore<ref name="Tan 2008">Tan S. K. & Clements R. (2008). "Taxonomy and distribution of the Neritidae (Mollusca: Gastropoda) in Singapore". ''Zoological Studies'' '''47'''(4): 481-494.</ref><ref name="Tudu 2017"/> Jambi province in Indonesia,<ref>NURRUDIN, N., HAMIDAH, A., & KARTIKA, W. D. (2015). "Keanekaragaman Jenis Gastropoda di Sekitar Tempat Pelelangan Ikan (TPI) Parit 7 Desa Tungkal I Tanjung Jabung Barat (Species Diversity of Gastropods around Parit Fish Auction, Tungkal I Village, West Tanjung Jabung)". ''Biospecies'' '''8'''(2): 51-60. [https://online-journal.unja.ac.id/index.php/biospecies/article/view/2503 PDF].</ref> and Japan.<ref name="Huang 1997"/> Records from Japan were incorrectly identified as ''Neripteron violaceum'' prior to 1997.<ref name="Huang 1997"/>

The type locality is "Hugli estuary at Fort William and Tolly’s Nullah", now in Kolkata.<ref name="Tudu 2017">TUDU, P. C., GHORAI, N., YENNAWAR, P., & MOHAPATRA, A. (2017). "REDISCOVER OF NERITE SNAIL ''Neripteron cornucopia'' (GASTROPODA, NERITIDAE) AFTER 180 YEARS IN INDIA". ''Indian J. Sci. Res'' '''13'''(1): 208-211. [http://ijsr.in/upload/17024384938.pdf PDF].</ref> William Thomas Blanford also reported this species from Irrawaddy River delta from Bago, Myanmar in 1867.<ref name="Blanford 1867">Blanford W. T. (1867). "Contributions to Indian malacology, No VIII. List of estuary shells collected in the delta of Irawady, in Pegu, with descriptions of new species:. ''The Journal of the Asiatic Society of Bengal'' '''36''': [https://archive.org/stream/journalofasiatic36asia#page/n281/mode/2up 51]-72.</ref><ref name="Tudu 2017"/> It was rediscovered from India after 180 years in 2017.<ref name="Tudu 2017"/>

==Description== ''Neripteron cornucopia'' was originally described under the name ''Neritina cornucopia'' by William Henry Benson in 1836. Benson' original text (the type description) in Latin and English reads as follows:<ref name="Benson 1836"/> {{cquote| ''Neritina cornucopia''. Testâ solidiusculâ, convolutâ, subsymetricâ, transversèe ovato-acutâ, gibbosâ, pallide virente, punctis minimis nigris, interdum confluentibus, lineis longitudinalibus dispositis ornatâ ; sporâ valdè depressâ ; anfractu pone callum compresso, sub-mediano, minimè obliquo ; peritremate acuto, libero, ovato, pene totam testam circumcludente ; callo magno ingrescente ; aperturâ lunatâ mediocri ; labio recto totâ longitudine denticulato, medio emarginato.

Greatest transverse breadth 0.7 inch. At the first glance this shell would probably be mistaken for the last described species, from which it differs more especially in the greater proportionate size of the aperture, in the perfect parallelism of the inner lip with the axis of the shell, its denticulation nearly throughout its whole length, instead of merely in the centre ; in the compression of the whorl at the back of the callus, and its subcentrical position, thereby occasioning the approach of the shell to a symmetrical configuration, and finally in its suite of colours. It is much less frequent than ''N. depressa''. I have met with only two specimens, in the Hugli at Fort William, and in Tolly's Nullah, adhering to piles and bricks. The aperture is livid white, with blackish shades. The operculum, following the form of the aperture, is broader than in ''N. depressa'', and its two costate teeth are more developed. }}

The color of the live snail is black or dark grayish with black outline.<ref name="Tudu 2017"/>

The color of the shell is dark brown.<ref name="Tudu 2017"/> The coloration has also purplish and greenish spiral bands.<ref name="Tudu 2017"/> Algae or silt are on periostracum usually.<ref name="Tudu 2017"/>

The width of the shell is 10–13 mm in India,<ref name="Tudu 2017"/> 7.2-12.9 mm in Hong Kong,<ref name="Huang 1997"/> and 6–17 mm in Singapore.<ref name="Tan 2008"/> The height of the shell is 4.5-9.2 mm in Hong Kong.<ref name="Huang 1997"/> The length of the shell is 13-19.6 mm in India,<ref name="Tudu 2017"/> up to 17.4 mm in Hong Kong,<ref name="Huang 1997"/> and 9–24 mm in Singapore.<ref name="Tan 2008"/>

The operculum has paucispiral nucleus with a small initial region.<ref>Kano Y. (2006). "Usefulness of the opercular nucleus for inferring early development in neritimorph gastropods". ''Journal of Morphology'' '''267'''(9): 1120-1136. {{doi|10.1002/jmor.10458}}.</ref>

The Radula was described and depicted by Huang in 1997.<ref name="Huang 1997"/>

There is X0 sex-determination system in ''Neripteron cornucopia'': the diploid number of chromosomes (2n) is 27 in males and 28 in females (2n = 26 + XX (or XO)).<ref name="Huang 1997"/>

''Neripteron violaceum'' (synonym: ''Neritina depressa'') is similar species. ''Neripteron auriculatum'' is very similar to juveniles of ''Neripteron cornucopia''.<ref name="Tan 2008"/>

==Ecology== ''Neripteron cornucopia'' lives in intertidal mangroves.<ref name="Tudu 2017"/> For example, Blanford collected them on stems of nipa palm ''Nypa fruticans''.<ref name="Blanford 1867"/> It lives in water on various substrates: on mud, on fallen leaves, on stones and under stones, on concrete.<ref name="Tan 2008"/>

== References == This article incorporates public domain text from the reference<ref name="Benson 1836"/> {{Reflist}}

==External links== {{Commons category|Neripteron cornucopia}} * [https://www.biodiversitylibrary.org/page/37188918 Benson, W. H. (1836). Descriptive catalogue of a collection of land and fresh-water shells, chiefly contained in the Museum of the Asiatic Society. Journal of the Asiatic Society of Bengal. 5(59): 741–750] * [https://www.biodiversitylibrary.org/page/13477892 Troschel, F. H. (1837). Neue Süßwasser-Conchylien aus dem Ganges. Archiv für Naturgeschichte. 3: 166–182.] * [https://www.biodiversitylibrary.org/page/14714800 Souleyet (L.F.A.) (1842). Description de cinq nouvelles espèces de nérites fluviales provenant du voyage de la Bonite. Revue Zoologique par la Société Cuviérienne. (1842): 269-270] * [https://www.biodiversitylibrary.org/page/9141496 Reeve, L. A. (1855-1856). Monograph of the genus Neritina. In: Conchologia Iconica, or, illustrations of the shells of molluscous animals, vol. 9, pls 1-37 and unpaginated text. L. Reeve & Co., London]

Category:Neritidae Category:Gastropods described in 1836 Category:Taxa named by William Henry Benson